FIRST LAW OF THERMODYNAMICS CONSERVATION OF ENERGY – OPEN SYSTEMAnswer it in 1hr.show solution step by step please with specific UNITS. FIRST LAW OF THERMODYNAMICS CONSERVATION OF ENERGY – OPEN SYSTEMAnswers are expressed in four significant digits.1.Air expands through a nozzle from 75 to 15 psia. The enthalpy decreases by 48 Btu/lbm the flow isadiabatic and the inlet velocity is very low. Calculate the exit velocity.Ans: 1550 ft/s2.The flow rate through a steam nozzle is 450 kg/h. The initial and final pressures are 1400 and 14 kPa.The initial and final velocities are 150 and 1200 m/s. There is no heat transfer. calculate the change inenthalpy.Ans: -708.8 kJ/kg3.Steam expands adiabatically through a nozzle from 1400 to 14 kPa. The initial and final enthalpy valuesare 3300 and 2800 kJ/kg, respectively, and the initial velocity is very low. Determine the final velocity.Ans: 1000 m/s

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Answered: 1. Air expands through a nozzle from 75…

1. Air expands through a nozzle from 75 to 15 psia. The enthalpy decreases by 48 Btu/lbm the flow is adiabatic and the inlet velocity is very low. Calculate the exit velocity. Ans: 1550 ft/s

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

FIRST LAW OF THERMODYNAMICS CONSERVATION OF ENERGY – OPEN SYSTEM

Answer it in 1hr.

show solution step by step please with specific UNITS.

FIRST LAW OF THERMODYNAMICS CONSERVATION OF ENERGY – OPEN SYSTEM
Answers are expressed in four significant digits.
1.
Air expands through a nozzle from 75 to 15 psia. The enthalpy decreases by 48 Btu/lbm the flow is
adiabatic and the inlet velocity is very low. Calculate the exit velocity.
Ans: 1550 ft/s
2.
The flow rate through a steam nozzle is 450 kg/h. The initial and final pressures are 1400 and 14 kPa.
The initial and final velocities are 150 and 1200 m/s. There is no heat transfer. calculate the change in
enthalpy.
Ans: -708.8 kJ/kg
3.
Steam expands adiabatically through a nozzle from 1400 to 14 kPa. The initial and final enthalpy values
are 3300 and 2800 kJ/kg, respectively, and the initial velocity is very low. Determine the final velocity.
Ans: 1000 m/s

Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.

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